Veil

A veil is an article of clothing or hanging cloth that is intended to cover some part of the head or face, or an object of some significance.

Veil of fiery gas revealed around the disk of Milky Way

Lifting the veil of topological censorship - EurekAlert

Lifting the Veil on Near-Death Experiences

Looking Beyond the Veil

Lifting the veil on disease avoidance strategies in multiple animal species

Unprecedented Precision – New DNA Sequencing Method Lifts “Veil” From Genome Black Box